Best Practice for Linking Uploaded PDFs (Agreements, Vehicle RCs, etc.) to Lot Objects in Foundry

Hey everyone,

We’re working on a data pipeline where information comes in lots. Each lot contains multiple related documents — like agreements, vehicle RCs, and other PDFs. We’ve created a Lot object to represent each batch of data, and we have separate objects for the document metadata (agreements, vehicles, RC info, etc.).

The part I’m not totally clear on:
We’re uploading the actual PDFs through the Media Uploader widget in Foundry. What’s the best way to associate each uploaded PDF with its corresponding Lot?

My initial thought was to:

  • Create a Lot object,

  • Link or reference all other objects (agreements, vehicle RCs, etc.) under that Lot,

  • But I’m not sure how to cleanly assign those uploaded PDFs to the correct Lot — especially since uploads happen independently via the widget.

Is there a recommended pattern for this in Foundry? Maybe a way to capture the Lot reference during the upload or through a pipeline that auto-links files post-upload?

Any tips or examples from folks who’ve handled similar “batched document ingestion” setups would be awesome.

Thanks!